Here is the full list of all 12 Rats - there are Time is running out! achievements.
kick 5 guards away
Earn 150 stars
Steal 1000 coins
Eat 25 cheeses
Find a total of 5 minutes
Fight 25 guards
Spend 300 second
Unlock 5 doors
Kick a pig away
Trigger the fire boot for the first time
Reach the maximum speed
Find all the blueprints